Ilex hybrid variety named Xia Yen

ABSTRACT

Xia Yen is a distinctive new evergreen holly distinguished from all other forms of  Ilex  known to me in that it combines a unique combination of desirable landscape and production traits from  Ilex opaca  and  Ilex cassine.  Plants have distinctive lustrous leaves, produce an erect narrow symmetrical crown without extensive shearing, and have the environmental tolerances of the  Ilex opaca  parent. Xia Yen is being marketed bearing the Dixie Star Holly trademark.

SUMMARY OF THE INVENTION

My invention is a unique ornamental type of Ilex selected by me from a second generation group of open-pollinated seedlings of Ilex×attenuata (I. opaca×I. cassine).

My goal was to select a tough ornate shrub combining I. cassine's fine leaf texture and uniform branching with I. opaca's better leaf color and tolerance of cold and moisture stress. This invention incorporates the desired traits from the original species differentiating it from all other forms of Ilex of which I am aware. The new clone has been named the Xia Yen variety.

The variety exhibits the following combination of traits:

-   -   (a) lustrous evergreen leaves intermediate in texture between         leaves of the two parental species,     -   (b) balanced, vigorous pyramidal crown without extensive         shearing due to strong apical dominance,     -   (c) annual crops of bright red fruit in early fall which remain         until spring,     -   (d) environmental tolerances equivalent to I. opaca.

Xia Yen was selected as a superior replacement for Ilex×attenuata ‘Foster #2’ (unpatented), a holly selection extensively planted in the southern United States. Under production conditions Xia Yen is self-branching with strong apical dominance which reduces production cost when compared to Foster holly while in landscapes Xia Yen displays superior leaf color and more symmetric branching. Xia Yen resembles Foster #2 Holly's leaf texture and crown shape more than Xia Xiang (U.S. Plant Pat. No. 10,526) and Huo Yen (U.S. Plant Pat. No. 11,741) Hollies do.

My new variety, Xia Yen, has been asexually propagated by soft-wood cuttings at Mobile, Decatur and Loxley, Ala. Propagules demonstrated that the distinctive combination of characteristics are fixed and reproduce true to type to successive generations.

Xia Yen is being marketed bearing the Dixie Star Holly trademark.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photographs show typical plants of my new variety of Ilex during fall and early winter as depicted in color as true as is reasonably possible to make the same in color photographs of the character. The specimens illustrated were being grown in the ground at Decatur, Ala. and in nursery containers at Loxley, Ala.

FIG. 1 illustrates shape, size and color of fruit and foliage,

FIG. 2 illustrates plant uniformity under nursery conditions.

DETAILED DESCRIPTION

The following is a detailed description of my new variety of Ilex made from observation of 7 year old plants growing in the ground at Baldwin County, Ala. Color terminology is in accordance with The R.H.S. Colour Chart of The Royal Horticultural Society, London, England.

-   Class Ilex×attenuata. -   Parentage: Unknown. -   Foliage:     -   -   Type.—Evergreen, glossy, coriaceous. Leaves elliptic —             lanceolate, serrate with minute spine-tipped teeth; Bases             narrowly tapered, apices acute.         -   Size.—leaf size is affected by environmental factors such as             light intensity and plant nutrition. Leaf size ranges from             4-6 cm long and 1-2 cm wide.         -   Petiole.—Ranges from 7 to 9 mm in length, grooved, color             Greyed Red Group 178B.         -   Color.—Upper surfaces of mature leaves are closest to Green             Group 137A; lower surface Green Group 138B. -   Stems:     -   -   Size.—Stem length, width and internode length are under             strong environmental control, increasing with favorable             fertility and moisture or decreased light. Stem measurements             taken in the outer canopy of the plant used for description,             reflecting growth of the previous two seasons, had lengths             ranging from 6 to 17 cm, caliper ranging from 2 mm at tips             to 8 mm at the base and internodes of 1.5 to 4 cm.         -   Color.—On new growth stems are Greyed Purple 187A, maturing             to Greyed Green Group 197A. Bark on trunks and branches is             Black Group 202D. -   Inflorescence and Fruit:     -   -   Flowers.—Pistillate, usually solitary in leaf axils or at             nodes just below leaves on initial spring growth; sepals 4,             petals 4; colored Orange White Group 159D on both surfaces.             All other floral morphology such as petal and sepal shape,             length, width and margins has been observed to be typical of             Ilex×attenuata.         -   Fruit.—Drupe containing 4 woody pyrenes; ellipsoid;             approximately 8 to 11 mm in diameter.         -   Fruit color.—Dull to semi-glossy, Red Group 46B. -   Plant growth characteristics: Plants have a slender conical growth     habit with seven-year individuals growing to roughly 3 m in height     and 1 m in width. Without pruning, growth slows but continues     proportionally with 15 year individuals generally in the range of 4     to 6 m in height, 1.5 to 2.5 m in width, and main trunk diameter of     4 to 8 cm depending on growing conditions such as moisture, soil     fertility and light intensity to which ‘Xia Yen’ is exposed during     growth. Branching is symmetrical without extensive pruning with     plants establishing a dominant central trunk. Xia Yen produces     adequate annual crops of colorful red berries but does not fruit as     heavily as Huo Yen holly. This variety's merit is a unique     combination of lustrous dark green leaves and red fruit in     combination with superior plant form. -   Environmental tolerance: Testing to date indicates that Xia Yen     successfully combines textural qualities of Ilex cassine with the     environmental adaptions of Ilex opaca. This new variety is adapted     to the same landscape conditions and climatic range associated     with I. opaca. Parental species have the same pest problems thus no     improved pest tolerance has been observed. 

1. A new and distinct variety of Ilex×attenuata plant named ‘Xia Yen’, as illustrated and described particularly as to the unique combination of: (a) annual abundant crops of fruit maturing to vibrant red in early fall then persisting until spring, (b) evergreen, fine textured leaves which retain lustrous green coloration even when plant is heavily berried, (c) produces an erect narrow symmetrical pyramidal crown without extensive shearing, (d) environmental tolerance equivalent to I. opaca. 